I am having the same problem, i think it happens when my spyware blocks a certain file or sumtin still havent figured it out, but if i just reinstall it works again.. so now im trying to download from update 6 to 7 on java.. and see if that works.. cause the little java symbol pops up with that error message... i even tried to send it to limewire through bugs@limewire.com, and they dont have that email address as addressed in the prompt that pops up... someone please help us!!!